text: #pragma once
  
  //fast_io_legacy.h deals with legacy C <stdio.h> and C++ <iostream>/<fstream>/<sstream> interface
  #include"fast_io_freestanding.h"
  #include"fast_io_legacy_impl/c_style.h"
  #include"fast_io_legacy_impl/stream_view.h"
  #include"fast_io_legacy_impl/streambuf_view.h"
  
  #include<iostream>
  
  namespace fast_io
  {
  inline namespace
  {
  inline c_style_io_handle c_stdin(stdin);
  inline c_style_io_handle c_stdout(stdout);
  inline c_style_io_handle c_stderr(stderr);
  /*
  inline streambuf_view cpp_cin(std::cin.rdbuf());
  inline streambuf_view cpp_cout(std::cout.rdbuf());
  inline streambuf_view cpp_cerr(std::cerr.rdbuf());
  inline streambuf_view cpp_clog(std::clog.rdbuf());
  */
  
  inline stream_view cpp_cin(std::cin);
  inline stream_view cpp_cout(std::cout);
  inline stream_view cpp_cerr(std::cerr);
  inline stream_view cpp_clog(std::clog);
  
  
  }
  }